S/2017/1057 12/20 17-22479 partners that deliver aid ensure that shipments arrive at warehouses. Independent third-party companies contracted by the United Nations ensure the independent verification of the arrival of assistance at the warehouses and further monitor distribution and/or service provision. Figure IV Number of beneficiaries assisted by the United Nations and its partners by cluster through cross-border humanitarian deliveries, November 2017 (Thousands) 30. During the reporting period, from 19 to 23 November, on sub-national immunization days children under 5 years of age were treated with the bivalent oral polio vaccine in hard-to-reach areas in most Governorates, with the exception of Idlib, Dayr al-Zawr and Raqqah. Some 405,...